SAP Message AH843 - Internal: Change to time category not allowed

Diagnosis
The time category for the steps with the specified partial key haschanged in internal table IOPER.
Schema step during billing &V1&
Number of operand &V2&
Operand &V3&
This causes an error during price block adjustment in function moduleISU_PRICE_ZONES_ADJUST.

Procedure
INCLUDE ISU_SAP OBJECT DOKU ID TXSpecify the partial key in your message.